Driver with cam

Abstract

The utility model relates to the technical field of automobile parts, in particular to a driver with a cam, which comprises a motor assembly, a motor worm arranged at the output end of the motor assembly, a gear matched with the worm, a cam assembly, a main body, a cover plate and a wiring harness assembly, the cam assembly comprises a cam and a cam shaft fixed or integrated with the cam, the cam shaft is in key connection with the gear, a limiting clamping groove is formed in the cam shaft, a first sealing ring is fixed to the cam shaft, and the first sealing ring is tightly attached to the inner wall of the positioning bearing hole of the main body; the cover plate is fixedly connected with the main body, and a clamping part matched with the width of the clamping groove is arranged on the cover plate; the wire harness assembly comprises a motor end interface and an outer end interface. The driver with the motor and the cam is adopted, the motor with low rotating speed and large torque can be adopted as the gear, large force can be output, meanwhile, compared with a push rod, the cam has the advantages of being high in speed, large in torque, small in noise and the like, and the market requirement of car door handles can be better met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, especially relates to a driver with cam. BACKGROUND

[0002] At present, automobile door handle has three types of exposed fixed type, hidden electrically outward opening type and hidden electrically inward turning type. The former is the traditional fuel vehicle common application, and the latter two are mechanically connected with the door handle or the door cover through the driver, and the motor of the driver is operated through signal instruction input to realize the opening and closing of the actuating rod of the driver, that is, the automatic opening and closing function of the door handle or the door cover. The latter two are the standard application rising on the new energy vehicle in recent years, and are also widely selected by users as the high-end version of the automobile. The driver for automobile on the market mostly uses push rod to apply actuating force, and the torque is small and the push-out speed is slow. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problem of small torque of the existing door handle driver, the utility model provides a driver with cam with large torque.

[0004] The utility model solves the technical problems by adopting the following technical scheme:

[0005] A driver with cam, comprising:

[0006] A motor assembly and a motor worm arranged at the output end of the motor assembly;

[0007] A gear, which cooperates with the motor worm;

[0008] A cam assembly, which comprises a cam and a cam shaft fixed or integrally arranged with the cam, the cam shaft is connected with the gear key, and the cam shaft is provided with a limiting clamping groove;

[0009] A main body, which is provided with a positioning support hole, the cam shaft is fixedly provided with a first sealing ring, and the first sealing ring is tightly attached to the inner wall of the positioning support hole;

[0010] A cover plate, which is fixedly connected with the main body, and is provided with a clamping part adapted to the width of the clamping groove; the clamping part realizes the axial limiting of the cam shaft.

[0011] A wire harness assembly, which comprises a motor end interface connected with the motor assembly and an external end interface for external connection.

[0012] Further, the main body is provided with a positioning support surface, the positioning support surface is installed with a thrust washer, and the thrust washer is arranged at both ends of the main shaft of the motor assembly.

[0013] Further, the main body is internally provided with a positioning rotation-stopping and supporting hole for mounting the motor assembly and an end face supporting surface for cooperating with the end face of the gear.

[0014] Further, the cover plate is provided with a motor supporting surface.

[0015] Further, the main body is provided with a sealing hole, the wire harness assembly passes out from the sealing hole, and the sealing hole is provided with a second sealing ring and a bagging plug.

[0016] Further, the main body is provided with a welding rib, and the cover plate is correspondingly provided with a welding groove.

[0017] Further, the main body is externally provided with a positioning buckle for self-mounting positioning.

[0018] Further, the cam is provided with a variable-radius profile and a return pull rod column.

[0019] Further, the cam shaft is provided with a first limiting portion and a second limiting portion, and the main body is provided with a first limiting surface and a second limiting surface for cooperating with the first limiting portion and the second limiting portion for limiting, respectively. The first limiting surface and the second limiting surface limit the limit positions of two rotation directions of the cam, respectively.

[0020] Further, the driver further comprises a Hall sensor for detecting the rotation number of the motor assembly.

[0021] Beneficial effects:

[0022] (1) The driver of the utility model adopts the structure of motor and cam, the gear can adopt the motor with low rotation speed and large torque, can output larger force, at the same time, the cam has the advantages of fast speed, large torque and small noise compared with the push rod, can meet the market demand of the door handle more;

[0023] (2) The cam shaft of the driver with cam of the utility model is fixed with the first sealing ring, the wire harness assembly is provided with the second sealing ring and the bagging plug, and the overall waterproof performance of the driver is good.

[0024] (3) The driver of the utility model can match different specifications of circular motors and different specifications of output mechanisms, realize different schemes of output force and time requirements, select different connector assemblies to meet the customer demand, according to the different schemes of output force and time requirements, the number of teeth of the gear and the number of teeth of the motor worm, and the design combination of the variable-radius profile of the cam, the matching demand of different motors can be met. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, for the ordinary skilled in the art, on the premise of not creating laboriously, other drawings can also be obtained according to these drawings.

[0026] Fig. 1 It is the overall structure schematic diagram of the driver with cam of the utility model;

[0027] Fig. 2 It is the structure schematic diagram of the driver of omitting cover plate;

[0028] Fig. 3 It is the structure schematic diagram of main body;

[0029] Fig. 4 It is the structure schematic diagram of the driver of omitting main body;

[0030] Fig. 5 It is the structure schematic diagram of cover plate inside.

[0031] 1, main body, 101, positioning rotation-stopping and supporting hole, 102, end face supporting surface, 103, positioning supporting hole, 104, positioning supporting surface, 105, welding rib, 106, sealing hole, 107, positioning buckle, 108, first limiting surface, 109, second limiting surface, 2, cover plate, 201, motor supporting surface, 202, welding groove, 203, clamping part, 3, motor assembly, 301, motor worm, 4, cam assembly, 41, cam, 411, variable radius profile, 412, return pull rod column, 42, cam shaft, 421, clamping groove, 422, first limiting part, 423, second limiting part, 5, gear, 501, tooth, 6, thrust washer, 7, first sealing ring, 8, wire harness assembly, 801, second sealing ring, 802, filling package plug, 803, motor end interface, 804, outer end interface. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. The description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creating laboriously belong to the scope of protection of the utility model.

[0033] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0034] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments are not intended to limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion is not needed in subsequent drawings once an item is defined in one drawing.

[0035] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0036] For the purposes of the description, reference can be made to spatially relative terms, such as "above", "below", "upper", "lower", and the like, to describe the relative location of a device as shown in the figures. It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device is inverted in the figures, a device described as above other devices or structures would then be oriented below the other devices or structures. Accordingly, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", and the like, as used herein do not have any specific meaning and are used only to distinguish one component from another.

[0037] In addition, it should be noted that the use of "first", "second", and the like, to describe a component does not limit the scope of the present application, unless otherwise stated, and the above terms are only used to distinguish one component from another.

[0038] As Figs. 1-5 The utility model discloses a drive with cam, including motor assembly 3 and the motor worm 301 of setting in the output of motor assembly 3, gear 5, cam assembly, main part 1, cover plate 2, wiring harness assembly 8, the front protruding end of the main shaft of motor assembly 3 is tightly fitted with motor worm 301, and gear 5 is matched with motor worm 301, and the cam assembly includes cam 41 and the fixed cam shaft 42 of integral setting with it, and the cam shaft 42 is keyed connected with gear 5, and the hexagonal shaft hole structure of cam shaft and gear 5 is keyed connected and press fits, and the cam shaft 42 has the limit card slot 421. Main part 1 is equipped with the positioning support hole 103, and the first sealing ring 7 is fixed on the cam shaft, and the first sealing ring 7 is tightly attached to the inner wall of positioning support hole 103, and the cover plate 2 is fixedly connected with main part 1, and main part 1 is equipped with the welding rib 105, and the cover plate 2 is correspondingly provided with the welding groove 202, and can be selectively but not limited to laser welding or ultrasonic welding, and the cover plate 2 is equipped with the clamping part 203 for the width adaptation of card slot, and the wiring harness assembly 8 includes motor end interface 803 connected with motor assembly 3 and external end interface 804 for external connection.

[0039] Main part 1 is equipped with the positioning support surface 104, and the positioning support surface 104 is installed with the thrust washer 6, and the thrust washer 6 is arranged at both ends of the main shaft of motor assembly 3.

[0040] The main body 1 is provided with a positioning and rotation-stopping and supporting hole 101 for mounting the motor assembly 3 and an end face supporting surface 102 for cooperating with the end face of the gear 5, the shape of the shell of the motor assembly 3 is adapted to the positioning and rotation-stopping and supporting hole 101, as an implementation manner, the positioning and rotation-stopping and supporting hole 101 is provided with a protrusion, and the motor assembly 3 is correspondingly provided with a groove.

[0041] The main body 1 is provided with a sealing hole 106, the wire harness assembly 8 passes out from the sealing hole 106, and the sealing hole 106 is provided with a second sealing ring 801 and a bag stopper 802.

[0042] The cam 41 is provided with a variable radius profile 411 and a return pull rod column 412.

[0043] The cam shaft 42 is provided with a first limiting portion 422 and a second limiting portion 423, and the main body 1 is provided with a first limiting surface 108 and a second limiting surface 109 for cooperating with the first limiting portion 422 and the second limiting portion 423 respectively.

[0044] The driver further comprises a Hall sensor for detecting the rotation number of the motor assembly 3.

[0045] The driver is designed as a one-stage speed reduction and torque increasing structure, wherein the motor worm 301 and the gear 5 constitute a one-stage speed reduction and torque increasing transmission relationship; the rotational movement of the gear 5 coaxially drives the rotational movement of the cam 41, and under the rotation of the variable radius profile 411 and the return pull rod column 412 of the cam 41, the handle telescopic stroke and the actuating force are realized.

[0046] According to the requirements of different models of motor assemblies 3 and different wire harness assemblies 8, the positioning and rotation-stopping and supporting hole 101 in the main body 1 is designed to match different motors, further, other platform design: the motor end interface 803 of different wire harness assemblies 8 is platform designed, the connection external external interface 804 is differentially designed to meet the customer's demand; the different number of teeth 501 of the gear 5 and the different transmission ratio of the motor worm 301 can meet the matching requirements of different motors.

[0047] The installation process is as follows: firstly, the motor worm 301, the gear 5, the cam 41 and the actuating surface of the first sealing ring 7 are smeared with appropriate lubricating grease; then, the thrust washer 6 and the wiring harness assembly 8 are placed in the corresponding positions of the main body 1; the motor assembly 3 which has been pressed is inserted into the motor end interface 803 of the wiring harness assembly 8, and then is placed in the corresponding position of the main body 1; the gear 5 is placed in the corresponding position of the main body 1, then the cam 41 with the first sealing ring 7 is sequentially inserted into the corresponding holes of the main body 1 and the gear 5; finally, after the gear 5 is checked and confirmed to be engaged in place, the cover plate 2 is mounted, and is placed on the welding tool, and the welding groove 202 of the cover plate 2 is fused with the welding ribs 105 of the main body 1 to be integrated.

[0048] The driver with the cam can match different specifications of circular motors and different specifications of output mechanisms, realize different schemes of output force and time requirements, select different connector assemblies to meet customer requirements. According to different schemes of output force and time requirements, the number of the teeth 501 of the gear 5 and the number of teeth of the motor worm 301, and the design combination of the variable radius profile 411 of the cam 41 meet the matching requirements of different motors.

[0049] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A cammed driver characterized by: The utility model relates to a kind of electric drive device, including: Motor assembly (3) and motor worm (301) arranged at the output end of motor assembly (3); Gear (5), the gear (5) is matched with motor worm (301); Cam assembly, cam assembly includes cam (41) and the cam shaft (42) fixed or integrally arranged with it, the cam shaft (42) is keyed to gear (5), cam shaft (42) has limit clamping groove (421) on it; Main body (1), the main body (1) is equipped with positioning support hole (103), the first sealing ring (7) is fixed on the cam shaft, the first sealing ring (7) is tightly attached to the inner wall of positioning support hole (103); Cover plate (2), the cover plate (2) is fixedly connected with main body (1), the cover plate (2) is equipped with clamping portion (203) for adapting with the width of clamping groove; Wire harness assembly (8), the wire harness assembly (8) includes motor end interface (803) connected with motor assembly (3) and outer end interface (804) for external connection.

2. A cammed driver as claimed in claim 1, wherein: The main body (1) is equipped with positioning support surface (104), the positioning support surface (104) is mounted with thrust washer (6), and the thrust washer (6) is arranged at both ends of the main shaft of the motor assembly (3).

3. A cammed driver as in claim 1, wherein: The main body (1) is equipped with positioning rotation-stopping and supporting hole (101) for installing motor assembly (3) and end surface supporting surface (102) for cooperating with the end surface of gear (5), and the shape of the shell of motor assembly (3) is adapted to the positioning rotation-stopping and supporting hole (101).

4. A cammed driver as claimed in claim 3, wherein: The cover plate (2) is equipped with motor support surface (201).

5. A cammed driver as in claim 1, wherein: The main body (1) is equipped with sealing hole (106), the wire harness assembly (8) passes out from the sealing hole (106), and the sealing hole (106) is equipped with second sealing ring (801) and bag stopper (802).

6. A cammed driver as in claim 1, wherein: The main body (1) is equipped with welding rib (105), and the cover plate (2) is correspondingly provided with welding groove (202).

7. A cammed driver as in claim 1, wherein: The main body (1) is further equipped with positioning buckle (107) for installing and positioning itself.

8. A cammed driver as in claim 1, wherein: The cam (41) is equipped with variable radius profile (411) and return pull rod column (412).

9. A cammed driver as in claim 1, wherein: The cam shaft (42) is equipped with first limiting portion (422) and second limiting portion (423), and the main body (1) is equipped with first limiting surface (108) and second limiting surface (109) respectively cooperating with the first limiting portion (422) and the second limiting portion (423) for limiting.

10. A cammed driver as in claim 1, wherein: The driver further includes a Hall sensor for detecting the number of revolutions of the motor assembly (3).

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